From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82420ECAAD8 for ; Fri, 16 Sep 2022 22:13:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230046AbiIPWNk (ORCPT ); Fri, 16 Sep 2022 18:13:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230077AbiIPWNf (ORCPT ); Fri, 16 Sep 2022 18:13:35 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D87F3BBA4A for ; Fri, 16 Sep 2022 15:13:34 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id z9-20020a921a49000000b002f0f7fb57e3so14997932ill.2 for ; Fri, 16 Sep 2022 15:13:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date; bh=EqMgv96S6WOApHkV1NNQhBVATR9B3h0BGCpG14NXv7E=; b=Yzn4To+yahdRcO8bMUB4rv7x4axiWmhGJH8XVhJVjN8Z5zSTs9wTgHddY+mfk5difR 3IlarrvdVwhQK84JQivcYDvB0NDtEAN4PXL977YcV+gwDIOBMzbyL+ZElVVjpeMePC66 Z4VjPSjofoJWviAGi/Zv/HagSYYVX3Vuk+M+l/VJjLI47h2yepUDT0KUMYzGBSArkCtI hkRU+yKJwIftLodQOJhp9hcn/Xyw+P8B74VmiCQ2A7rAl0IafDB2tVLW2vT8wNVtdjyQ Ndw01OH5xo5BHEAMpE4SNTJKO9CAw392qDkWmglb5Ko2YUHim0LXZjwuRKBpnXYbgTqH ZreA== X-Gm-Message-State: ACrzQf0A+eV0+OsoDrvTdk9CuUomug/w+H+GVMTBQ+rg2NBkH+iJJlMo Kkhkndh92684IeiyLG0bC4uEr+iEzJFw/qHfWl/WUU7VgoNk X-Google-Smtp-Source: AMsMyM6+Auj0NFS3XWN08knoqKP1R6D6Hg0acSp2RtRUzfCLPUJTUYyFzAUmxaEGrYertHxCWX8cPSe1znjm9opSFyEQdBAK9uzP MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1748:b0:2eb:e656:8123 with SMTP id y8-20020a056e02174800b002ebe6568123mr3055166ill.15.1663366414212; Fri, 16 Sep 2022 15:13:34 -0700 (PDT) Date: Fri, 16 Sep 2022 15:13:34 -0700 In-Reply-To: <0000000000006b15c805c7fbd885@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004027ca05e8d2ac0a@google.com> Subject: Re: [syzbot] memory leak in mld_newpack From: syzbot To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, phind.uet@gmail.com, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 6879c2d3b960 Merge tag 'pinctrl-v6.0-2' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1053435d080000 kernel config: https://syzkaller.appspot.com/x/.config?x=a4afe4efcad47dde dashboard link: https://syzkaller.appspot.com/bug?extid=dcd3e13cf4472f2e0ba1 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11842b37080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15078ed5080000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0e68bb9c6cf9/disk-6879c2d3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bf179217db31/vmlinux-6879c2d3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+dcd3e13cf4472f2e0ba1@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88810bb0bb00 (size 240): comm "kworker/0:2", pid 143, jiffies 4294946271 (age 15.640s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 bb b0 0b 81 88 ff ff ................ 00 70 aa 11 81 88 ff ff 80 10 e9 44 81 88 ff ff .p.........D.... backtrace: [] __alloc_skb+0x1f9/0x270 net/core/skbuff.c:422 [] alloc_skb include/linux/skbuff.h:1257 [inline] [] alloc_skb_with_frags+0x6a/0x340 net/core/skbuff.c:6021 [] sock_alloc_send_pskb+0x39f/0x3d0 net/core/sock.c:2665 [] sock_alloc_send_skb include/net/sock.h:1866 [inline] [] mld_newpack.isra.0+0x81/0x200 net/ipv6/mcast.c:1748 [] add_grhead+0xa6/0xc0 net/ipv6/mcast.c:1851 [] add_grec+0x7bc/0x820 net/ipv6/mcast.c:1989 [] mld_send_cr net/ipv6/mcast.c:2115 [inline] [] mld_ifc_work+0x273/0x750 net/ipv6/mcast.c:2653 [] process_one_work+0x2ba/0x5f0 kernel/workqueue.c:2289 [] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436 [] kthread+0x125/0x160 kernel/kthread.c:376 [] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306